At 4:35 a.m., the Solano Area CHP was dispatched to a fire on the shoulder of Interstate 80 westbound, at the Interstate 505 interchange, officials said.

After arriving on scene, CHP was contacted by Vacaville Fire Department officials and an officer from the Vacaville Police Department, which detained a 46-year-old woman they believed responsible for the fire.

Due to statements and evidence gathered at the scene, the woman was placed under arrest on suspicion of arson, and booked into the Solano County Jail officials said.

Jessica Ann Warne, 46, of Sacramento, was arrested.

Officials ask everyone to “be on the lookout and report suspicious activity during this fire season.”